Applets are most commonly tested for SQL injection vulnerability.īasics of HTTP protocol are necessary to understand Web Application Security concepts. It will now be feasible for penetration testing. The applets requests will now be displayed in XML format. Else, specify complete path of the jars in the above commandĥ) Now, browse through the application with applets and observe the HTTP traffic in Burp Suite. Make sure all the three jars i.e., Burpsuite.jar, burpjdser.jar, xstream.jar are in the directory in which you are running the command. The jars URLs can be copied and pasted on another browser to save them onto your local directory.ģ) Install Java on your machine and set the PATH environment variable appropriately.Ĥ) Run the below command to run burp using JDser plungin.ĭ:\> java -Djava.lo.tmpdir=D:\Temp -classpath burpsuite.jar burpjdser.jar xstream.jar D:\jars\* burp.StartBurpĭ:\jars\* is the location of the folder in which application jars are stored Enable a proxy tool to view the jars URL in the proxy. Clear the java cache to download the application jars afresh. The jars in java cache can be deleted from Control Panel -> Java -> Temporary Internet Files -> Settings. In windows machines, jars are stored in java cache ( Control Panel -> Java -> Temporary Internet Files -> View). Ref: Ģ) Copy all the application jars to a folder on your system (Eg: D:\jars). Steps to use JDser plugin for applets pen testingġ) Download burpjdser.jar and xstream.jar. JDSer-ng will deserialize Java Objects into XML using the XStream library. In order to perform penetration testing on such applications, we need to deserialize these request and analyze them as we do for normal web applications.īurp proxy and JDser plugin can be used to do this. Serialized java requests and responses are not displayed in readable format in typical proxy tools. ![]() Java applets serialize the data being sent to server.
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